I'm in the process of building a web app called Vybecast. I brought vybecast.com (and various other vybecast.tld's) a while back. Since then I've managed to secure and purchase vibecast.com (and also various other vibecast.tld's).
After thinking long and hard about it, I've decided to stick with vybecast.com. I also have twitter @vybecast and facebook.com/vybecast - Personally, I like the playfulness of the 'y'.
The ultimate aim is: a normal URL might look like vybecast.com/username/slug. If someone incorrectly types in vibecast.com/username/slug I'll work some .htaccess magic to automatically forward to the first URL without any drama.
While I'm still building my app I want to teach search engines that if someone typed 'vibecast', did they mean 'vybecast'. I know this ultimately an impossible task as I cant change search algorithms. However, apart from http://vybecast.com pointing to a simple holding page, is there anything I can do with my other domian names to help search engines learn while I am still building the app and not worried about what traffic goes to vibecast.com at this stage?
At the moment, I have the luxury of manipulating my domain names until I'm nearly ready to launch.
Is there anything I can do now, such as a mini pages/site explaining the vybecast/vibecast link before I have to effectively point all my domain names to the same server/IP.